$def with (username, picture, description)
<form id="master_profile" action="" method="post" enctype="multipart/form-data">
<h3>$username</h3>
<table>
<tbody>
	<tr>
		<td><label for="picture">头像</label></td>
		<td>
            <img id="show_picture" src="$picture" alt="头像" />（尺寸不超过80x80，大小不超过10k）<br />
            <input type="file" id="mypic" name="mypic" accept="image/*" />
        </td>
    </tr>
    <tr>
        <td><label for="description">简介</label></td>
        <td><textarea id="description" name="description" rows="6" cols="45">$description</textarea></td>
    </tr>
    <tr>
        <td>&nbsp;</td>
        <td><input type="submit" id="save_btn" value="保存" /></td>
    </tr>
</tbody>
</table>
</form>
